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        <h2>
          <span class="refentrytitle">strsub</span>
        </h2>
        <p>strsub — 
      Extract a substring
          </p>
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      <div class="refsect1">
        <a id="idp153917344"></a>
        <h2>Description</h2>
        <p>
      Return a substring of the source string. strsub runs at init time only.
    </p>
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        <a id="idp153918624"></a>
        <h2>Syntax</h2>
        <pre class="synopsis">Sdst <span class="command"><strong>strsub</strong></span> Ssrc[, istart[, iend]]</pre>
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      <div class="refsect1">
        <a id="idp153979952"></a>
        <h2>Initialization</h2>
        <p>
      <span class="emphasis"><em>istart</em></span>
      (optional, defaults to 0) -- start position in Ssrc, counting from 0.
      A negative value means the end of the string.
    </p>
        <p>
      <span class="emphasis"><em>iend</em></span>
      (optional, defaults to -1) -- end position in Ssrc, counting from 0.
      A negative value means the end of the string. If iend is less than
      istart, the output is reversed.
    </p>
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        <a id="idp153982704"></a>
        <h2>Examples</h2>
        <p>
      Here is an example of the strsub opcode. It uses the file <a class="ulink" href="examples/strsub.csd" target="_top"><em class="citetitle">strsub.csd</em></a>.

      </p>
        <div class="example">
          <a id="idp153984480"></a>
          <p class="title">
            <strong>Example 882. Example of the strsub opcode.</strong>
          </p>
          <div class="example-contents">
            <p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
            <pre class="programlisting">
<span class="csdtag">&lt;CsoundSynthesizer&gt;</span>
<span class="csdtag">&lt;CsOptions&gt;</span>
<span class="comment">; Select audio/midi flags here according to platform</span>
<span class="comment">; Audio out   Audio in    No messages</span>
-odac           -iadc     <span class="comment">;;;-d     RT audio I/O</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o strsub.wav -W ;;; for file output any platform</span>
<span class="csdtag">&lt;/CsOptions&gt;</span>
<span class="csdtag">&lt;CsInstruments&gt;</span>
<span class="comment">; By: Jonathan Murphy 2007</span>

<span class="oblock">instr</span> 1
    Smember <span class="opc">strget</span> p4

    <span class="comment">; Parse Smember</span>
    istrlen    <span class="opc">strlen</span>   Smember
    idelimiter <span class="opc">strindex</span> Smember, "<span class="op">:</span>"

    S1    <span class="opc">strsub</span> Smember, 0, idelimiter  <span class="comment">; "String1"</span>
    S2    <span class="opc">strsub</span> Smember, idelimiter <span class="op">+</span> 1, istrlen  <span class="comment">; "String2"</span>

    <span class="opc">printf</span> "First string<span class="op">:</span> <span class="op">%</span>s\nSecond string<span class="op">:</span> <span class="op">%</span>s\n", 1, S1, S2

<span class="oblock">endin</span>

<span class="csdtag">&lt;/CsInstruments&gt;</span>
<span class="csdtag">&lt;CsScore&gt;</span>
<span class="stamnt">i</span> 1 0 1 "Str<span class="stamnt">i</span>ng1:Str<span class="stamnt">i</span>ng2"
<span class="csdtag">&lt;/CsScore&gt;</span>
<span class="csdtag">&lt;/CsoundSynthesizer&gt;</span>
</pre>
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        <p><br class="example-break" />
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        <a id="idp153988768"></a>
        <h2>See also</h2>
        <p>
          <a class="link" href="strsubk.html" title="strsubk">
            <em class="citetitle">strsubk</em>
          </a>
        </p>
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        <h2>Credits</h2>
        <p>
      </p>
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            <td>Author: Istvan Varga</td>
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            <td>2006</td>
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